ECE474S09_Lecture30 - ECE 474 Principles of Electronic Devices Prof Virginia Ayres Electrical Computer Engineering Michigan State University

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ECE 474: Principles of Electronic Devices Prof. Virginia Ayres Electrical & Computer Engineering Michigan State University [email protected]
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Chp. 05: Current State-of-Art Transistors Lecture 30: Introduction to pn junctions
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Si n p n Si n p n Si n p n OFF I V I V Transistor: a device for binary logic (Chp. 06) ON Saturation regime ON Linear (ohmic) regime
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Si n p n OFF Transistor: a device for binary logic (Chp. 06) p n n Si p n Si
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pn junction: Energy picture: p 0 = 10 13 cm -3 n 0 = 10 17 cm -3
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pn junction: Energy picture: individually: E F E i E V E C E gap = 1.1 eV E F E i E V E C E gap = 1.1 eV 0.407 eV 0.2 eV p 0 = 10 13 cm -3 n 0 = 10 17 cm -3
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pn junction: Energy picture: individually: E F E i E V E C E gap = 1.1 eV E F E i E V E C E gap = 1.1 eV 0.407 eV 0.2 eV p 0 = 10 13 cm -3 n 0 = 10 17 cm -3 Align the Fermi energy levels
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pn junction: Energy picture: individually: E F E i E V E C E gap = 1.1 eV E i E V E C E gap = 1.1 eV 0.407 eV 0.2 eV p 0 = 10 13 cm -3 n 0 = 10 17 cm -3 Align the Fermi energy levels
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pn junction: Energy picture E F E i E V E C E gap = 1.1 eV E i E V E C E gap = 1.1 eV 0.407 eV 0.2 eV p 0 = 10 13 cm -3 n 0 = 10 17 cm -3 “Connect the dots” E F
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pn junction: Energy picture
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This note was uploaded on 04/14/2009 for the course ECE 474 taught by Professor Ayres during the Spring '09 term at Michigan State University.

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ECE474S09_Lecture30 - ECE 474 Principles of Electronic Devices Prof Virginia Ayres Electrical Computer Engineering Michigan State University

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